The fan is behind the cooler so it draws air through it.

 

I have the fan assist cooler. 10,000 miles in the Arizona scorching heat and I honestly have no idea if it makes any difference or not. Last week it was 121 degrees on my 40 mi ride home from work Today is was a cool 109 no sweat.
No temp gauge on this thing you know What I do know is my legs are way less baked on the RGS than they were on my last bike a water cooled Kawasaki Vaquero with two fans on the radiator blowing that hot air over the motor and onto my legs I'm telling you this air cooled Harley is leaps and bounds cooler running so my legs gauge tells me don't worry about it.

 

I live and ride in Arizona. In 110+ degree heat, oil now runs at or below 240.......this part is a no brainer if you live in a hot climate.

YMMV

Lon

 

I have the 2017 Road King Police that comes with the fan assited oil cooler as Standard Equiptment. I notice my new M8 runs wayyyy better than my TC88 in my old 06 in the hot temps. Harley Claims a 50F reduction in oil temp with the Oil cooler fan on the Police Bike part of thier web site. If you live in a hot place like Phoenix I say get one of these fans.
PHX

 

Because I disabled my EITMS I had the fan assisted oil cooler kit installed for peace of mind. Not sure if it makes a difference though. It's only a small fan that blows air towards the lower front section of the engine. If it didn't have that fan, wouldn't air hit that section anyway once you're out riding? I guess it's more for when you're stuck in stop and go traffic. It's suppose to cool the engine by 50 degrees. Can't tell without a true temp gauge. The rear cooling kit, in comparison, is not an engine cooling kit. It only draws heat away from passengers to keep them cool. Nothing to do with cooling the engine.

If I had to do it again, yes, I would still opt for the fan assisted oil cooler. Peace of mind.

 

supposed to lower the oil temp up to 50 degrees, not engine temp tho 50 degree lower OT should help ET in theory I suppose

 

As well as helping the additives in the oil to last/work better/longer due to not being exposed to the extreme heat, theoretically extending engine life......

YMMV

Lon

 

yup, which is why I'm sticking with HD360 instead of synthetic which is much less a necessity now

 

I love Amsoil, I put severe gear in the primary and the Amsoil trans fluid. My hogs always run smoother and cooler YMMV.

 

your engines have always run cooler with Amsoil in the primary and trans?